William S. McFeely, author of Pulitzer-winning biography of Ulysses S. Grant, dies at 89

William S. McFeely, a Pulitzer Prize-winning historian whose biographies of Ulysses S. Grant and Frederick Douglass were praised as literary landmarks that explored the psychological complexities of two major 19th-century figures, died Dec. 11 at a hospital in Sleepy Hollow, N.Y. He was 89.

The cause was idiopathic pulmonary fibrosis, said his son, W. Drake McFeely.